Soundboard with sound beam and sound tunnel in grand piano

Abstract

A soundboard with a sound beam and a sound tunnel in a grand piano is characterized in that a first groove and a second groove are formed in the outer wall of the soundboard, the first groove is obliquely formed in the width direction of the soundboard, and the second groove is obliquely formed in the length direction of the soundboard; the two grooves are crossed and communicated with each otherto divide the outer wall of the soundboard into four resonance areas; a sound beam assembly is further arranged in the center of the outer wall of the soundboard and comprises a plurality of strip-shaped sound beam components, and the strip-shaped sound beam components are arranged on the two sides of the first groove and the two sides of the second groove in pairs. And the two grooves respectively form sound tunnels on the outer wall of the soundboard. According to the soundboard, a conventional free vibration mode of the soundboard is changed into a conventional standard vibration mode, theproblems that a high-pitch area of the grand piano cannot be lighted and a low-pitch area is thick and round are solved from the angles of vibration, resonance and sound production, and particularly,the sound production of the low-pitch area is improved. Practice proves that the improved design scheme has outstanding substantive features and remarkable technical progress, and an obvious technicaleffect is achieved.

Description

technical field [0001] The invention relates to a grand piano, in particular to a sound board with a sound beam and a sound tunnel in the grand piano. Background technique [0002] The piano is a keyboard instrument in Western classical music, and has the reputation of "the king of musical instruments". It consists of 88 keys (52 white keys, 36 black keys) and a metal string soundboard. [0003] The piano has a total of six main structures, including strings, iron skeleton, soundboard, action system, wooden shell, and pedals. where the soundboard (see figure 1 ) is composed of a resonance board (also known as a large soundboard), an auxiliary wood (also known as a gear), a soundboard frame and a string code. The resonance plate is like a thin plate, below which are pasted some auxiliary wood arranged at a certain distance, and around which are pasted soundboard frames, on which the mid-range, high-pitched strings and bass strings are fixed. When the strings vibrate, they...

AI Technical Summary

Problems solved by technology

[0005]The common problem with traditional grand pianos is that when the grand piano is making sounds, its soundboard has an inherent resonant frequency. The area is not bright, and the bass area is not thick and round enough

Especially the sound quality in the bass area has always been the shortcoming of the piano, even limiting the creative breadth of the composer

The main reason is that the soundboard of the current grand piano cannot satisfy the good broadband vibration from the treble region to the bass region, that is, it cannot adapt to the resonance and vibration of the wide frequency changes in the treble region, midrange region and bass region at the same time.

In summary, the structural design of the soundboard of the traditional grand piano is unreasonable, which is not conducive to the good sound wave vibration of the soundboard from the high-pitched area to the low-pitched area.

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